I have the same problem - the products looks great but no sound!!!
[84634.255183] usbcore: registered new interface driver hiddev [84634.365746] usbcore: registered new interface driver snd-usb-audio [84634.413374] input: Jabra SPEAK 410 USB as /devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.3/input/input10 [84634.413697] generic-usb 0003:0B0E:0410.0001: input,hiddev96,hidraw0: USB HID v1.11 Device [Jabra SPEAK 410 USB] on usb-0000:00:1d.2-1/input3 [84634.413743] usbcore: registered new interface driver usbhid [84634.413747] usbhid: USB HID core driver [84635.174212] 2:1:1: endpoint lacks sample rate attribute bit, cannot set. [84635.179213] 2:2:1: endpoint lacks sample rate attribute bit, cannot set. [84635.233223] 2:2:1: endpoint lacks sample rate attribute bit, cannot set.